A60US - Aluminum windows

Hidden Casement system

Impact resistance

class 3

Air tightness window

class 4


class E900

Wind tightness

class C5 EN 12211:2001; EN 12210:2001

The A60 Hidden Casement system is a part of the window/door system with a thermal break A60. The windows produced from the elements of this system have casements that are unseen from the external side of the building. In the row of adjacent fixed and openable windows all the compartments look the same form the outside . The width of window frames from the external side is small, what makes the structure look slender and light.

  • 3 chamber system

  • Low value of the overall heat-transfer coefficient

  • Structural depth of the window sections is equal to 60 mm (frames) and 69 mm (casements)

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  • Key features
  • Technical Specifications
  • Performance
  • Windows available as fixed or open in, tilt and turn, tilt and slide and pivot
  • 1 or 2 leaf doors open in or open out
  • Large size door constructions available
  • Glazing up to 50 mm
  • Burglar resistant secure windows and doors options
  • Dual color options
  • Lower cost door option
  • Numerous finish options
  • Multi-point locking
  • Eurogroove that broadens the choice of hardware available
  • Suites with other A systems allowing total design flexibility and project solutions
  • Compliance with CE marking requirements


Depth of frame 
Depth of leaf 
Glazing range 

Size & Weight Limitations

Maximum size (H×W)H to 74.9 W to 43.3
Max weight lbs286
Air Permeability Class 4
Watertightness class E 900, EN 1027L2001; EN 12208:2001
Water Penetration Resistance Test Pressure 15.04 psf (720Pa) - Before Thermal Cycles and after Design Load
Thermal insulation (Uf) from 0.25


We offer high variety of Aluminum windows and doors. Every order is custom made according to our customers requirements. Our modern construction solutions make it possible to create extremely large g lazed areas and improve building design and interior décor not available with most of our competitors, for example 25’ W x 9’H lift and slide doors. We have almost an unlimited potential in terms of both colors and their different shades for our aluminium components. Another key benefit for our products are the components utilizing multi point locking. This is achieved through a link gear running around the window sash, which operates pins which in turn lock into keepers located around the perimeter of the sash opening. Depending on the size of sash used, there can be up to twelve locking points on any one sash. In doors a six-point lock is used. This comprises of four compression roller pins, one latch and one dead bolt. All the locks on any one sash are operated by one lever and secured by one key. Further this creates insulating advantage as an even sash seal is achieved as well as enhanced security. Pleae note we can perform the installation or assit our customer in an installation consult capacity.


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Eco Windows USA provides top quality window and door solutions in Brass, Steel, Aluminum, Wood and PVC. With a capacity of producing over 5000 windows per day our systems are highly customizable, allowing for almost unlimited possibilities to arrange elevations and building interiors for both residential and commercial use. Our brand of window and door carpentry is produced by combining precisely selected materials, premium German hardware, latest technologies and long-term experience in production. We provide CAD design support as well as complete installation services.